#

# Exercise 3.14

from report import read_portfolio

def portfolio_cost(filename):

''' Calculate total cost of portofolio

:param filename: The name of the CSV file containing the portfolio data.

:return: The total cost of the portfolio as a float.

'''

portfolio = read_portfolio(filename) # Portfolio class object

# return sum([i['shares'] * i['price'] for i in portfolio ])

# return sum([i.shares * i.price for i in portfolio ])

return portfolio.total_cost

def main(argv):

pf_file = argv[1]

cost = portfolio_cost(pf_file)

print(f'Total cost of portfolio: ${cost:0.2f}')

if __name__ == '__main__':

import sys

if len(sys.argv) != 2:

raise SystemExit(f'Usage: {sys.argv[0]} ' 'portfoliofile')

main(sys.argv)